Plunge pools bridge the gap between spas or hot tubs and full-size swimming pools. They offer many of the benefits of a standard pool and take up less space, are easier to maintain and add an appealing outdoor focal point. With the addition of jets and harnesses, they can even be used for swimming. What all plunge pools have in common is that they’re relaxing spots for enjoying a dip or stretching out in the water while still allowing enough space in your yard for other activities.